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Error code reference

Viking Range Error Code 2 flashes (DSI)

DSI control fault.

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What the 2 flashes (DSI) error code actually means

Your Viking range is showing a fault in the electronic system that controls how the burner sparks and lights. The range's ignition control board has detected a problem it cannot recover from on its own. Try unplugging the range or flipping its circuit breaker off and back on. If the error comes back, the ignition control board will need to be replaced.

Diagnostic procedure

The full 2 flashes (DSI) procedure

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1
First diagnostic step
Cycle power and retry. If fault remains, replace DSI.
More steps, wiring diagram references, and verified part numbers
Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.
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Most common causes of 2 flashes (DSI)

Ranked by how often they cause this code
  1. 1Failed DSI control board
  2. 2Transient electrical fault or power surge
  3. 3Wiring harness damage or loose connection
  4. 4Incorrect or lost supply voltage to DSI board
  5. 5Flame sense circuit fault

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Questions people ask about 2 flashes (DSI)

What does 2 flashes (DSI) mean on a Viking range?
The 2-flash DSI code on a Viking range indicates a fault in the Direct Spark Ignition control system. This is the electronic board responsible for managing the ignition sequence, sparking the burner, and confirming that a flame has been established. The fault can be caused by a failed DSI board, a wiring issue, or a transient electrical condition. Cycling power is the recommended first step to determine if the fault is persistent.
Is it safe to use my Viking range when it shows the 2-flash DSI error?
Operating the range with an active DSI fault is not recommended. The DSI control board is responsible for managing gas flow timing and confirming that the burner has properly ignited. A faulted board may not reliably perform these safety functions. The range should not be used until the fault is resolved.
How much does it cost to fix a 2-flash DSI error on a Viking range?
If the repair requires replacing the DSI control board, parts and labor costs typically fall in the range of $200 to $500 or more, depending on the specific model and your location. If the fault is resolved by reseating a wiring connection, the cost can be limited to a service call fee. Obtaining a diagnosis from a qualified technician before ordering parts is advisable to confirm the board is the root cause.
Will resetting the range clear the 2-flash DSI error?
Cycling power, by unplugging the range or shutting off its circuit breaker for a minute and then restoring power, can clear the fault if it was caused by a temporary electrical condition. If the 2-flash code returns after the power cycle, the fault is persistent and the DSI control board will need to be replaced. A reset alone will not fix an internally failed board.
How do I fix the 2-flash DSI fault on my Viking range?
Start by cycling power to the range for at least one minute, then restore power and test. If the 2-flash code reappears, the DSI control board needs to be replaced. Before ordering a board, inspect the wiring harness connected to the DSI board for loose connectors, damaged wires, or corrosion, as a connection issue can sometimes trigger this fault.

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